From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#57684: locked narrowing breaks existing code without an apparent way to repair Date: Wed, 14 Sep 2022 14:57:11 +0300 Message-ID: <83illq2mp4.fsf@gnu.org> References: <2e25ca87e3c6ebb795d7@heytings.org> <87bkrowmiw.fsf@gnus.org> <83y1um3crp.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9799"; mail-complaints-to="usenet@ciao.gmane.io" Cc: gregory@heytings.org, larsi@gnus.org, 57684@debbugs.gnu.org To: Paul Pogonyshev Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Sep 14 14:55:44 2022 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oYRvb-0002R1-Kb for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 14 Sep 2022 14:55:43 +0200 Original-Received: from localhost ([::1]:35576 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oYRva-0006zj-Jd for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 14 Sep 2022 08:55:42 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39130) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oYR1m-0006kH-QI for bug-gnu-emacs@gnu.org; Wed, 14 Sep 2022 07:58:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:37065) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oYR1m-0001LV-Ee for bug-gnu-emacs@gnu.org; Wed, 14 Sep 2022 07:58:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oYR1m-0007Wz-0P for bug-gnu-emacs@gnu.org; Wed, 14 Sep 2022 07:58:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 14 Sep 2022 11:58:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 57684 X-GNU-PR-Package: emacs Original-Received: via spool by 57684-submit@debbugs.gnu.org id=B57684.166315665428915 (code B ref 57684); Wed, 14 Sep 2022 11:58:01 +0000 Original-Received: (at 57684) by debbugs.gnu.org; 14 Sep 2022 11:57:34 +0000 Original-Received: from localhost ([127.0.0.1]:53997 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oYR1K-0007WJ-4s for submit@debbugs.gnu.org; Wed, 14 Sep 2022 07:57:34 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:46326) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oYR1I-0007W5-87 for 57684@debbugs.gnu.org; Wed, 14 Sep 2022 07:57:33 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:36870) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oYR19-00015U-OS; Wed, 14 Sep 2022 07:57:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=Ktk0119RAYFmmtl08RwYA0xevSfanOId9K0GEY7i56g=; b=phZwWFNNHbiE Y2A7626WRHnz6nTtpnbmSFLCndHkq7Vv9pMx4X/sQzkq+S+kSMthIfpH/WsNNHlZnaehp6WWGjEGw 1PAnVsecPIX60BAWET8T3862a1xMmOLUlmXwVQKueA6CowKwrkCMMP0kuBU2jdskxP/YNlVYVG7K8 AUW3iyuKETxpidinOT8Q/oPOvTEvcavdl8sio6zve0AztMHJU/fF03rDz3k54/83OP8rv/g4Rg6wn 8JPkbbY3+H3H3+nDMHkwlpOCl/AEoYXIu1JZQFLGOW/oeioUac56FdSpJGVUvAsMUCnI/Lb5aphoM QWS0US4SRTbWEvtGXdYQRA==; Original-Received: from [87.69.77.57] (port=3581 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oYR17-0005pK-8c; Wed, 14 Sep 2022 07:57:22 -0400 In-Reply-To: (message from Paul Pogonyshev on Wed, 14 Sep 2022 11:45:01 +0200) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:242448 Archived-At: > From: Paul Pogonyshev > Date: Wed, 14 Sep 2022 11:45:01 +0200 > Cc: Gregory Heytings , Lars Ingebrigtsen , 57684@debbugs.gnu.org > > By the way, it would really be nice if Emacs could do something about hangs irrespective of what causes > that. Even if Elisp code is buggy, Emacs itself should never allow it to fall into an infinite loop and stop > responding to C-g, leaving full restart as the only way out. I think that's impossible in general, unless we restrict what Lisp programs can do. Every programming language can be used to write a buggy program. However, it should be possible to prevent some cases of such problematic behavior, certainly so when the infloop is caused by our bug. But for that we need to know the details of the specific case in order to investigate.